Thanks, that looks like a good increase in torque. Is that dynoed, or is t hat what Comp cams says it'll be?

edit: Is that on a 5.9?

 

Gonna require a custom tune with that cam though.... factor that price into it as well.

 

thats with cam quest (its like a desk top dyno) and based on a stock 5.2l and is not gonna require a reflash although it would probably make a little more power if you did use a tuner .the cam is pretty much the limit anything bigger will need a custom tune .according to comp cams you do not need to reflash . the next cam down is the 254hr-12 p#20-608-9 which is a factory replacement with increased torque .and really close to the same torque output hp is about 15 less.i use comp cams cam quest 6 to select cams for all my friends and customers and havent had any body complain yet it does a fine job and is really accurate on the dyno charts based on info you put in oh and its free

 

really if your running stock manifolds the 254 cam is really only 1hp difference and torque is better on the smaller cam .the big difference comes with headers .so if you wanted to for sure stay away from a tuner the smaller cam is golden

 

What numbers does that program produce with a factory cam?
Factory Numbers
5.2L is 300lb-ft @ 3200? rpm and 225HP @ ??? rpm

5.9L is 330lb-ft @ 3200? rpm and 235 HP @ ??? rpm

Numbers vary from source, my torque specs are from 1994 factory service manual though. I am unsure of RPM's (can't remember).

I will say that 400lb-ft at the crank at 2000 rpm is BS though. That is close to factory diesel numbers (435 @ 1600). It just seems WAY to good to be true.

I since these computers are MAP and will not adapt to mods very well a tuner will be needed to get anywhere close to those numbers. You will need a new fuel and timing curve.

What numbers are you using for head flow in that program?

The program is from Comp Cams too.

 

the program only uses comp cam profiles that have been dynoed by compcams .obd 2 vehicles do learn fuel mapping (long and short term fuel trim)not in a performance manner but they due learn and adjust to maintain proper fueling within reason.yes it would be good to get a custom map especially with the 258 or larger cam. even on a stock motor itll improve power a bit .as far as head flow the #s are stock magnum intake. 500cfm for stock t.b. stk valves 194/160 and 9:1 compression the info put in was stock low perf head it has various options like porting ,high perf head with porting and other options its a little vague but its gonna be fairly close and ya 400ft/lbs at 2k seems a bit much to me also . the 254 cam is a stock replacement cam for the magnum 318 and is noted as being a high torque cam . the program helps you pick the best cam based on what your running and looking to get in my case its torque and economy .with the 254 you make 11 hp over stock and 67 ft/lbs torque over stock on a stock motor.so its 241hp at 4000rpm 367 ft/lbs at 3200 rpm on a stock motor with the 254 cam when i change to small tube headers the torque goes to 400@2000 maybe a stretch dunno .the specs on my 97 5.2 are 230hp and 300 ft/lbs not sure on rpm id have to look it up

 

I don't know a dang thing about cam's except that I know what they look like.. but adding cheap power to a truck intended to tow, I might know a couple things..

I added an e-fan specifically for towing.. there is nothing worse than backing a boat or a camper in tight places and watching your temperature gauge rise... I added one specifically to keep this from happening.. what I discovered while doing so is a pretty good pep off the line too.. I'm not certain that fan helps at all once your moving, but right off the line you'll not convince me that it doesn't.. that is a nice little edge while towing any decent weight...

oh, and I've not got close to hot sitting still or backing a load either.. those fans are going to pull 4500cfm no matter what direction the truck is headed..

$100~$150... very good mod for truck intended for towing.